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NeilBrown
9bb56d5925
congestion_wait() in this context is just a sleep - block devices do not
support congestion signalling any more.
The goal for this wait, which was introduced in commit ae78bf9c4f
("[PATCH] add -o flush for fat") is to wait for any recently written
data to get to storage. We currently have no direct mechanism to do
this, so a simple wait that behaves identically to the current
congestion_wait() is the best we can do.
This is a step towards removing congestion_wait()
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: NeilBrown <[email protected]>
Acked-by: OGAWA Hirofumi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>